topic Coordinates in Documentation

Coordinates

jarkwiat — Mon, 11 Aug 2025 00:23:13 GMT

Hi, I feel a bit silly asking this, but I've been struggling for so long and haven't found an answer anywhere. I'm looking for coordinates on a map. I have a geodetic point set up and I'd like to place a few trees with specific coordinates in relation to it. How do I do this? I used Google Translate, so I apologize for my English 🙂

Re: Coordinates

CosminF — Mon, 11 Aug 2025 06:51:11 GMT

Hi,

If I understood correctly - you want to place a tree you know the coordinates of?

Firstly, you have to define your project origin in relation to world coordinates. Let's say project origin is at the X Y coordinates you have in your image.

And then you can do some calculation based on that, to calculate the distance on X and Y axis from the origin to place your tree.

You can place this object from the library to double-check the accuracy:

and place as many of these as you want. Afterwards you can replace them all with trees.

Re: Coordinates

jarkwiat — Mon, 11 Aug 2025 08:26:27 GMT

Thank you for your quick help, I'll try it right away and let you know 🙂

Re: Coordinates

jarkwiat — Thu, 14 Aug 2025 00:29:15 GMT

I tried, but it seems I have the wrong data, as you can see in the attached image. Thank you for your help - I understand what the settings are, but I need to solve this problem with the tree map service provider.

Re: Coordinates

Laszlo Nagy — Thu, 14 Aug 2025 17:19:50 GMT

I wonder if this could be done with the Archicad-Grasshopper connection.

Here is how this could work:

You could have a text or other file containing the X,Y coordinates of the trees.

Grasshopper would read those X,Y coordinate pairs and place "Tree" Library Parts at those X,Y coordinates.

If you had a 3D terrain geometry in Archicad, you could go even further to place the Trees on the Terrain.

To do this, you could bring into Rhino/Grasshopper the 3D terrain geometry from Archicad, use the Archicad Deconstruct Components in Grasshopper to extract their top surface, and then for each X,Y coordinate pair, find the Z coordinate of the terrain, and place "Tree" Library Parts at those X,Y,Z coordinates. This way, all placed Trees would be on the top surface of the terrain.

Re: Coordinates

scottjm — Thu, 14 Aug 2025 20:58:48 GMT

Based on your screenshot it looks like you are trying to work with longitude and latitude. You would need to work with Eastings and Northings as these are a flat plane x and y mapped co-ordinates.

With those co-ordinates you could then determine to co-ordinates of each tree relative to your Archicad origin and place each tree manually.
To automate the process of placing the trees based on their co-ordinates you would need to use grasshopper (or maybe python/tapir) as Laszlo described.

Re: Coordinates

jarkwiat — Fri, 15 Aug 2025 19:36:49 GMT

Thank you guys, I have a lot of work ahead of me but I'll try and let you know !